diff --git a/v2rayN/v2rayN/Global.cs b/v2rayN/v2rayN/Global.cs
index 2431f8c7..d6e520f4 100644
--- a/v2rayN/v2rayN/Global.cs
+++ b/v2rayN/v2rayN/Global.cs
@@ -126,6 +126,7 @@ namespace v2rayN
         };
 
         public const string Hysteria2ProtocolShare = "hy2://";
+
         public static readonly Dictionary<EConfigType, string> ProtocolShares = new()
         {
             {EConfigType.VMess,"vmess://"},
diff --git a/v2rayN/v2rayN/Handler/ConfigHandler.cs b/v2rayN/v2rayN/Handler/ConfigHandler.cs
index eccc8263..2cea5cfb 100644
--- a/v2rayN/v2rayN/Handler/ConfigHandler.cs
+++ b/v2rayN/v2rayN/Handler/ConfigHandler.cs
@@ -22,10 +22,10 @@ namespace v2rayN.Handler
         /// </summary>
         /// <param name="config"></param>
         /// <returns></returns>
-        public static int LoadConfig(ref Config config)
+        public static int LoadConfig(ref Config? config)
         {
             //载入配置文件
-            string result = Utils.LoadResource(Utils.GetConfigPath(configRes));
+            var result = Utils.LoadResource(Utils.GetConfigPath(configRes));
             if (!Utils.IsNullOrEmpty(result))
             {
                 //转成Json
@@ -214,7 +214,7 @@ namespace v2rayN.Handler
         /// </summary>
         /// <param name="config"></param>
         /// <returns></returns>
-        public static int SaveConfig(ref Config config, bool reload = true)
+        public static int SaveConfig(Config config, bool reload = true)
         {
             ToJsonFile(config);
 
@@ -253,7 +253,7 @@ namespace v2rayN.Handler
             }
         }
 
-        public static int ImportOldGuiConfig(ref Config config, string fileName)
+        public static int ImportOldGuiConfig(Config config, string fileName)
         {
             string result = Utils.LoadResource(fileName);
             if (Utils.IsNullOrEmpty(result))
@@ -343,9 +343,9 @@ namespace v2rayN.Handler
                 };
             }
 
-            GetDefaultServer(ref config);
-            GetDefaultRouting(ref config);
-            SaveConfig(ref config);
+            GetDefaultServer(config);
+            GetDefaultRouting(config);
+            SaveConfig(config);
             LoadConfig(ref config);
 
             return 0;
@@ -361,7 +361,7 @@ namespace v2rayN.Handler
         /// <param name="config"></param>
         /// <param name="profileItem"></param>
         /// <returns></returns>
-        public static int AddServer(ref Config config, ProfileItem profileItem, bool toFile = true)
+        public static int AddServer(Config config, ProfileItem profileItem, bool toFile = true)
         {
             profileItem.configType = EConfigType.VMess;
 
@@ -383,7 +383,7 @@ namespace v2rayN.Handler
                 return -1;
             }
 
-            AddServerCommon(ref config, profileItem, toFile);
+            AddServerCommon(config, profileItem, toFile);
 
             return 0;
         }
@@ -403,7 +403,7 @@ namespace v2rayN.Handler
             }
 
             SqliteHelper.Instance.UpdateAll(indexs);
-            RemoveServerViaSubid(ref config, subid, false);
+            RemoveServerViaSubid(config, subid, false);
 
             return 0;
         }
@@ -414,7 +414,7 @@ namespace v2rayN.Handler
         /// <param name="config"></param>
         /// <param name="index"></param>
         /// <returns></returns>
-        public static int CopyServer(ref Config config, List<ProfileItem> indexs)
+        public static int CopyServer(Config config, List<ProfileItem> indexs)
         {
             foreach (var it in indexs)
             {
@@ -431,13 +431,13 @@ namespace v2rayN.Handler
                 if (profileItem.configType == EConfigType.Custom)
                 {
                     profileItem.address = Utils.GetConfigPath(profileItem.address);
-                    if (AddCustomServer(ref config, profileItem, false) == 0)
+                    if (AddCustomServer(config, profileItem, false) == 0)
                     {
                     }
                 }
                 else
                 {
-                    AddServerCommon(ref config, profileItem, true);
+                    AddServerCommon(config, profileItem, true);
                 }
             }
 
@@ -450,7 +450,7 @@ namespace v2rayN.Handler
         /// <param name="config"></param>
         /// <param name="item"></param>
         /// <returns></returns>
-        public static int SetDefaultServerIndex(ref Config config, string? indexId)
+        public static int SetDefaultServerIndex(Config config, string? indexId)
         {
             if (Utils.IsNullOrEmpty(indexId))
             {
@@ -476,18 +476,18 @@ namespace v2rayN.Handler
             }
             if (lstProfile.Count > 0)
             {
-                return SetDefaultServerIndex(ref config, lstProfile.Where(t => t.port > 0).FirstOrDefault()?.indexId);
+                return SetDefaultServerIndex(config, lstProfile.Where(t => t.port > 0).FirstOrDefault()?.indexId);
             }
-            return SetDefaultServerIndex(ref config, SqliteHelper.Instance.Table<ProfileItem>().Where(t => t.port > 0).Select(t => t.indexId).FirstOrDefault());
+            return SetDefaultServerIndex(config, SqliteHelper.Instance.Table<ProfileItem>().Where(t => t.port > 0).Select(t => t.indexId).FirstOrDefault());
         }
 
-        public static ProfileItem? GetDefaultServer(ref Config config)
+        public static ProfileItem? GetDefaultServer(Config config)
         {
             var item = LazyConfig.Instance.GetProfileItem(config.indexId);
             if (item is null)
             {
                 var item2 = SqliteHelper.Instance.Table<ProfileItem>().FirstOrDefault();
-                SetDefaultServerIndex(ref config, item2?.indexId);
+                SetDefaultServerIndex(config, item2?.indexId);
                 return item2;
             }
 
@@ -502,7 +502,7 @@ namespace v2rayN.Handler
         /// <param name="index"></param>
         /// <param name="eMove"></param>
         /// <returns></returns>
-        public static int MoveServer(ref Config config, ref List<ProfileItem> lstProfile, int index, EMove eMove, int pos = -1)
+        public static int MoveServer(Config config, ref List<ProfileItem> lstProfile, int index, EMove eMove, int pos = -1)
         {
             int count = lstProfile.Count;
             if (index < 0 || index > lstProfile.Count - 1)
@@ -574,7 +574,7 @@ namespace v2rayN.Handler
         /// <param name="config"></param>
         /// <param name="profileItem"></param>
         /// <returns></returns>
-        public static int AddCustomServer(ref Config config, ProfileItem profileItem, bool blDelete)
+        public static int AddCustomServer(Config config, ProfileItem profileItem, bool blDelete)
         {
             var fileName = profileItem.address;
             if (!File.Exists(fileName))
@@ -606,7 +606,7 @@ namespace v2rayN.Handler
                 profileItem.remarks = $"import custom@{DateTime.Now.ToString("yyyy/MM/dd HH:mm:ss")}";
             }
 
-            AddServerCommon(ref config, profileItem, true);
+            AddServerCommon(config, profileItem, true);
 
             return 0;
         }
@@ -617,7 +617,7 @@ namespace v2rayN.Handler
         /// <param name="config"></param>
         /// <param name="profileItem"></param>
         /// <returns></returns>
-        public static int EditCustomServer(ref Config config, ProfileItem profileItem)
+        public static int EditCustomServer(Config config, ProfileItem profileItem)
         {
             if (SqliteHelper.Instance.Update(profileItem) > 0)
             {
@@ -637,7 +637,7 @@ namespace v2rayN.Handler
         /// <param name="config"></param>
         /// <param name="profileItem"></param>
         /// <returns></returns>
-        public static int AddShadowsocksServer(ref Config config, ProfileItem profileItem, bool toFile = true)
+        public static int AddShadowsocksServer(Config config, ProfileItem profileItem, bool toFile = true)
         {
             profileItem.configType = EConfigType.Shadowsocks;
 
@@ -654,7 +654,7 @@ namespace v2rayN.Handler
                 return -1;
             }
 
-            AddServerCommon(ref config, profileItem, toFile);
+            AddServerCommon(config, profileItem, toFile);
 
             return 0;
         }
@@ -665,13 +665,13 @@ namespace v2rayN.Handler
         /// <param name="config"></param>
         /// <param name="profileItem"></param>
         /// <returns></returns>
-        public static int AddSocksServer(ref Config config, ProfileItem profileItem, bool toFile = true)
+        public static int AddSocksServer(Config config, ProfileItem profileItem, bool toFile = true)
         {
             profileItem.configType = EConfigType.Socks;
 
             profileItem.address = profileItem.address.TrimEx();
 
-            AddServerCommon(ref config, profileItem, toFile);
+            AddServerCommon(config, profileItem, toFile);
 
             return 0;
         }
@@ -682,7 +682,7 @@ namespace v2rayN.Handler
         /// <param name="config"></param>
         /// <param name="profileItem"></param>
         /// <returns></returns>
-        public static int AddTrojanServer(ref Config config, ProfileItem profileItem, bool toFile = true)
+        public static int AddTrojanServer(Config config, ProfileItem profileItem, bool toFile = true)
         {
             profileItem.configType = EConfigType.Trojan;
 
@@ -697,7 +697,7 @@ namespace v2rayN.Handler
                 return -1;
             }
 
-            AddServerCommon(ref config, profileItem, toFile);
+            AddServerCommon(config, profileItem, toFile);
 
             return 0;
         }
@@ -708,7 +708,7 @@ namespace v2rayN.Handler
         /// <param name="config"></param>
         /// <param name="profileItem"></param>
         /// <returns></returns>
-        public static int AddHysteria2Server(ref Config config, ProfileItem profileItem, bool toFile = true)
+        public static int AddHysteria2Server(Config config, ProfileItem profileItem, bool toFile = true)
         {
             profileItem.configType = EConfigType.Hysteria2;
             profileItem.coreType = ECoreType.sing_box;
@@ -726,7 +726,7 @@ namespace v2rayN.Handler
                 return -1;
             }
 
-            AddServerCommon(ref config, profileItem, toFile);
+            AddServerCommon(config, profileItem, toFile);
 
             return 0;
         }
@@ -737,7 +737,7 @@ namespace v2rayN.Handler
         /// <param name="config"></param>
         /// <param name="profileItem"></param>
         /// <returns></returns>
-        public static int AddTuicServer(ref Config config, ProfileItem profileItem, bool toFile = true)
+        public static int AddTuicServer(Config config, ProfileItem profileItem, bool toFile = true)
         {
             profileItem.configType = EConfigType.Tuic;
             profileItem.coreType = ECoreType.sing_box;
@@ -765,12 +765,12 @@ namespace v2rayN.Handler
                 return -1;
             }
 
-            AddServerCommon(ref config, profileItem, toFile);
+            AddServerCommon(config, profileItem, toFile);
 
             return 0;
         }
 
-        public static int SortServers(ref Config config, string subId, string colName, bool asc)
+        public static int SortServers(Config config, string subId, string colName, bool asc)
         {
             var lstModel = LazyConfig.Instance.ProfileItems(subId, "");
             if (lstModel.Count <= 0)
@@ -872,7 +872,7 @@ namespace v2rayN.Handler
         /// <param name="config"></param>
         /// <param name="profileItem"></param>
         /// <returns></returns>
-        public static int AddVlessServer(ref Config config, ProfileItem profileItem, bool toFile = true)
+        public static int AddVlessServer(Config config, ProfileItem profileItem, bool toFile = true)
         {
             profileItem.configType = EConfigType.VLESS;
 
@@ -894,7 +894,7 @@ namespace v2rayN.Handler
                 return -1;
             }
 
-            AddServerCommon(ref config, profileItem, toFile);
+            AddServerCommon(config, profileItem, toFile);
 
             return 0;
         }
@@ -923,7 +923,7 @@ namespace v2rayN.Handler
             return new Tuple<int, int>(lstProfile.Count, lstKeep.Count);
         }
 
-        public static int AddServerCommon(ref Config config, ProfileItem profileItem, bool toFile = true)
+        public static int AddServerCommon(Config config, ProfileItem profileItem, bool toFile = true)
         {
             profileItem.configVersion = 2;
 
@@ -1024,7 +1024,7 @@ namespace v2rayN.Handler
         /// <param name="clipboardData"></param>
         /// <param name="subid"></param>
         /// <returns>成功导入的数量</returns>
-        private static int AddBatchServers(ref Config config, string clipboardData, string subid, bool isSub, List<ProfileItem> lstOriSub)
+        private static int AddBatchServers(Config config, string clipboardData, string subid, bool isSub, List<ProfileItem> lstOriSub)
         {
             if (Utils.IsNullOrEmpty(clipboardData))
             {
@@ -1035,7 +1035,7 @@ namespace v2rayN.Handler
             //remove sub items
             if (isSub && !Utils.IsNullOrEmpty(subid))
             {
-                RemoveServerViaSubid(ref config, subid, isSub);
+                RemoveServerViaSubid(config, subid, isSub);
                 subFilter = LazyConfig.Instance.GetSubItem(subid)?.filter ?? "";
             }
 
@@ -1053,7 +1053,7 @@ namespace v2rayN.Handler
                 //maybe sub
                 if (!isSub && (str.StartsWith(Global.HttpsProtocol) || str.StartsWith(Global.HttpProtocol)))
                 {
-                    if (AddSubItem(ref config, str) == 0)
+                    if (AddSubItem(config, str) == 0)
                     {
                         countServers++;
                     }
@@ -1101,31 +1101,31 @@ namespace v2rayN.Handler
 
                 if (profileItem.configType == EConfigType.VMess)
                 {
-                    addStatus = AddServer(ref config, profileItem, false);
+                    addStatus = AddServer(config, profileItem, false);
                 }
                 else if (profileItem.configType == EConfigType.Shadowsocks)
                 {
-                    addStatus = AddShadowsocksServer(ref config, profileItem, false);
+                    addStatus = AddShadowsocksServer(config, profileItem, false);
                 }
                 else if (profileItem.configType == EConfigType.Socks)
                 {
-                    addStatus = AddSocksServer(ref config, profileItem, false);
+                    addStatus = AddSocksServer(config, profileItem, false);
                 }
                 else if (profileItem.configType == EConfigType.Trojan)
                 {
-                    addStatus = AddTrojanServer(ref config, profileItem, false);
+                    addStatus = AddTrojanServer(config, profileItem, false);
                 }
                 else if (profileItem.configType == EConfigType.VLESS)
                 {
-                    addStatus = AddVlessServer(ref config, profileItem, false);
+                    addStatus = AddVlessServer(config, profileItem, false);
                 }
                 else if (profileItem.configType == EConfigType.Hysteria2)
                 {
-                    addStatus = AddHysteria2Server(ref config, profileItem, false);
+                    addStatus = AddHysteria2Server(config, profileItem, false);
                 }
                 else if (profileItem.configType == EConfigType.Tuic)
                 {
-                    addStatus = AddTuicServer(ref config, profileItem, false);
+                    addStatus = AddTuicServer(config, profileItem, false);
                 }
 
                 if (addStatus == 0)
@@ -1144,7 +1144,7 @@ namespace v2rayN.Handler
             return countServers;
         }
 
-        private static int AddBatchServers4Custom(ref Config config, string clipboardData, string subid, bool isSub, List<ProfileItem> lstOriSub)
+        private static int AddBatchServers4Custom(Config config, string clipboardData, string subid, bool isSub, List<ProfileItem> lstOriSub)
         {
             if (Utils.IsNullOrEmpty(clipboardData))
             {
@@ -1217,7 +1217,7 @@ namespace v2rayN.Handler
 
             if (isSub && !Utils.IsNullOrEmpty(subid))
             {
-                RemoveServerViaSubid(ref config, subid, isSub);
+                RemoveServerViaSubid(config, subid, isSub);
             }
             if (isSub && lstOriSub?.Count == 1)
             {
@@ -1231,7 +1231,7 @@ namespace v2rayN.Handler
                 return -1;
             }
 
-            if (AddCustomServer(ref config, profileItem, true) == 0)
+            if (AddCustomServer(config, profileItem, true) == 0)
             {
                 return 1;
             }
@@ -1241,7 +1241,7 @@ namespace v2rayN.Handler
             }
         }
 
-        private static int AddBatchServers4SsSIP008(ref Config config, string clipboardData, string subid, bool isSub, List<ProfileItem> lstOriSub)
+        private static int AddBatchServers4SsSIP008(Config config, string clipboardData, string subid, bool isSub, List<ProfileItem> lstOriSub)
         {
             if (Utils.IsNullOrEmpty(clipboardData))
             {
@@ -1250,7 +1250,7 @@ namespace v2rayN.Handler
 
             if (isSub && !Utils.IsNullOrEmpty(subid))
             {
-                RemoveServerViaSubid(ref config, subid, isSub);
+                RemoveServerViaSubid(config, subid, isSub);
             }
 
             //SsSIP008
@@ -1280,7 +1280,7 @@ namespace v2rayN.Handler
                     };
                     ssItem.subid = subid;
                     ssItem.isSub = isSub;
-                    if (AddShadowsocksServer(ref config, ssItem) == 0)
+                    if (AddShadowsocksServer(config, ssItem) == 0)
                     {
                         counter++;
                     }
@@ -1292,7 +1292,7 @@ namespace v2rayN.Handler
             return -1;
         }
 
-        public static int AddBatchServers(ref Config config, string clipboardData, string subid, bool isSub)
+        public static int AddBatchServers(Config config, string clipboardData, string subid, bool isSub)
         {
             List<ProfileItem>? lstOriSub = null;
             if (isSub && !Utils.IsNullOrEmpty(subid))
@@ -1303,26 +1303,26 @@ namespace v2rayN.Handler
             var counter = 0;
             if (Utils.IsBase64String(clipboardData))
             {
-                counter = AddBatchServers(ref config, Utils.Base64Decode(clipboardData), subid, isSub, lstOriSub);
+                counter = AddBatchServers(config, Utils.Base64Decode(clipboardData), subid, isSub, lstOriSub);
             }
             if (counter < 1)
             {
-                counter = AddBatchServers(ref config, clipboardData, subid, isSub, lstOriSub);
+                counter = AddBatchServers(config, clipboardData, subid, isSub, lstOriSub);
             }
             if (counter < 1)
             {
-                counter = AddBatchServers(ref config, Utils.Base64Decode(clipboardData), subid, isSub, lstOriSub);
+                counter = AddBatchServers(config, Utils.Base64Decode(clipboardData), subid, isSub, lstOriSub);
             }
 
             if (counter < 1)
             {
-                counter = AddBatchServers4SsSIP008(ref config, clipboardData, subid, isSub, lstOriSub);
+                counter = AddBatchServers4SsSIP008(config, clipboardData, subid, isSub, lstOriSub);
             }
 
             //maybe other sub
             if (counter < 1)
             {
-                counter = AddBatchServers4Custom(ref config, clipboardData, subid, isSub, lstOriSub);
+                counter = AddBatchServers4Custom(config, clipboardData, subid, isSub, lstOriSub);
             }
 
             return counter;
@@ -1338,7 +1338,7 @@ namespace v2rayN.Handler
         /// <param name="config"></param>
         /// <param name="url"></param>
         /// <returns></returns>
-        public static int AddSubItem(ref Config config, string url)
+        public static int AddSubItem(Config config, string url)
         {
             //already exists
             if (SqliteHelper.Instance.Table<SubItem>().Where(e => e.url == url).Count() > 0)
@@ -1353,10 +1353,10 @@ namespace v2rayN.Handler
                 url = url
             };
 
-            return AddSubItem(ref config, subItem);
+            return AddSubItem(config, subItem);
         }
 
-        public static int AddSubItem(ref Config config, SubItem subItem)
+        public static int AddSubItem(Config config, SubItem subItem)
         {
             if (Utils.IsNullOrEmpty(subItem.id))
             {
@@ -1388,7 +1388,7 @@ namespace v2rayN.Handler
         /// <param name="config"></param>
         /// <param name="subid"></param>
         /// <returns></returns>
-        public static int RemoveServerViaSubid(ref Config config, string subid, bool isSub)
+        public static int RemoveServerViaSubid(Config config, string subid, bool isSub)
         {
             if (Utils.IsNullOrEmpty(subid))
             {
@@ -1411,7 +1411,7 @@ namespace v2rayN.Handler
             return 0;
         }
 
-        public static int DeleteSubItem(ref Config config, string id)
+        public static int DeleteSubItem(Config config, string id)
         {
             var item = LazyConfig.Instance.GetSubItem(id);
             if (item is null)
@@ -1419,7 +1419,7 @@ namespace v2rayN.Handler
                 return 0;
             }
             SqliteHelper.Instance.Delete(item);
-            RemoveServerViaSubid(ref config, id, false);
+            RemoveServerViaSubid(config, id, false);
 
             return 0;
         }
@@ -1439,7 +1439,7 @@ namespace v2rayN.Handler
 
         #region Routing
 
-        public static int SaveRoutingItem(ref Config config, RoutingItem item)
+        public static int SaveRoutingItem(Config config, RoutingItem item)
         {
             if (Utils.IsNullOrEmpty(item.id))
             {
@@ -1574,7 +1574,7 @@ namespace v2rayN.Handler
             return 0;
         }
 
-        public static int SetDefaultRouting(ref Config config, RoutingItem routingItem)
+        public static int SetDefaultRouting(Config config, RoutingItem routingItem)
         {
             if (SqliteHelper.Instance.Table<RoutingItem>().Where(t => t.id == routingItem.id).Count() > 0)
             {
@@ -1586,20 +1586,20 @@ namespace v2rayN.Handler
             return 0;
         }
 
-        public static RoutingItem GetDefaultRouting(ref Config config)
+        public static RoutingItem GetDefaultRouting(Config config)
         {
             var item = LazyConfig.Instance.GetRoutingItem(config.routingBasicItem.routingIndexId);
             if (item is null)
             {
                 var item2 = SqliteHelper.Instance.Table<RoutingItem>().FirstOrDefault(t => t.locked == false);
-                SetDefaultRouting(ref config, item2);
+                SetDefaultRouting(config, item2);
                 return item2;
             }
 
             return item;
         }
 
-        public static int InitBuiltinRouting(ref Config config, bool blImportAdvancedRules = false)
+        public static int InitBuiltinRouting(Config config, bool blImportAdvancedRules = false)
         {
             var items = LazyConfig.Instance.RoutingItems();
             if (blImportAdvancedRules || items.Count <= 0)
@@ -1634,11 +1634,11 @@ namespace v2rayN.Handler
 
                 if (!blImportAdvancedRules)
                 {
-                    SetDefaultRouting(ref config, item2);
+                    SetDefaultRouting(config, item2);
                 }
             }
 
-            if (GetLockedRoutingItem(ref config) == null)
+            if (GetLockedRoutingItem(config) == null)
             {
                 var item1 = new RoutingItem()
                 {
@@ -1651,7 +1651,7 @@ namespace v2rayN.Handler
             return 0;
         }
 
-        public static RoutingItem GetLockedRoutingItem(ref Config config)
+        public static RoutingItem GetLockedRoutingItem(Config config)
         {
             return SqliteHelper.Instance.Table<RoutingItem>().FirstOrDefault(it => it.locked == true);
         }
diff --git a/v2rayN/v2rayN/Handler/CoreConfigSingbox.cs b/v2rayN/v2rayN/Handler/CoreConfigSingbox.cs
index dcc1dea2..19e3c14c 100644
--- a/v2rayN/v2rayN/Handler/CoreConfigSingbox.cs
+++ b/v2rayN/v2rayN/Handler/CoreConfigSingbox.cs
@@ -126,7 +126,7 @@ namespace v2rayN.Handler
 
                     if (_config.routingBasicItem.enableRoutingAdvanced)
                     {
-                        var routing = ConfigHandler.GetDefaultRouting(ref _config);
+                        var routing = ConfigHandler.GetDefaultRouting(_config);
                         if (!Utils.IsNullOrEmpty(routing.domainStrategy4Singbox))
                         {
                             inbound.domain_strategy = routing.domainStrategy4Singbox;
@@ -475,7 +475,7 @@ namespace v2rayN.Handler
 
                 if (_config.routingBasicItem.enableRoutingAdvanced)
                 {
-                    var routing = ConfigHandler.GetDefaultRouting(ref _config);
+                    var routing = ConfigHandler.GetDefaultRouting(_config);
                     if (routing != null)
                     {
                         var rules = Utils.FromJson<List<RulesItem>>(routing.ruleSet);
@@ -490,7 +490,7 @@ namespace v2rayN.Handler
                 }
                 else
                 {
-                    var lockedItem = ConfigHandler.GetLockedRoutingItem(ref _config);
+                    var lockedItem = ConfigHandler.GetLockedRoutingItem(_config);
                     if (lockedItem != null)
                     {
                         var rules = Utils.FromJson<List<RulesItem>>(lockedItem.ruleSet);
diff --git a/v2rayN/v2rayN/Handler/CoreConfigV2ray.cs b/v2rayN/v2rayN/Handler/CoreConfigV2ray.cs
index 65083081..9c02a713 100644
--- a/v2rayN/v2rayN/Handler/CoreConfigV2ray.cs
+++ b/v2rayN/v2rayN/Handler/CoreConfigV2ray.cs
@@ -177,7 +177,7 @@ namespace v2rayN.Handler
 
                     if (_config.routingBasicItem.enableRoutingAdvanced)
                     {
-                        var routing = ConfigHandler.GetDefaultRouting(ref _config);
+                        var routing = ConfigHandler.GetDefaultRouting(_config);
                         if (routing != null)
                         {
                             if (!Utils.IsNullOrEmpty(routing.domainStrategy))
@@ -197,7 +197,7 @@ namespace v2rayN.Handler
                     }
                     else
                     {
-                        var lockedItem = ConfigHandler.GetLockedRoutingItem(ref _config);
+                        var lockedItem = ConfigHandler.GetLockedRoutingItem(_config);
                         if (lockedItem != null)
                         {
                             var rules = Utils.FromJson<List<RulesItem>>(lockedItem.ruleSet);
diff --git a/v2rayN/v2rayN/Handler/CoreHandler.cs b/v2rayN/v2rayN/Handler/CoreHandler.cs
index bf38b223..377b0758 100644
--- a/v2rayN/v2rayN/Handler/CoreHandler.cs
+++ b/v2rayN/v2rayN/Handler/CoreHandler.cs
@@ -28,7 +28,7 @@ namespace v2rayN.Handler
 
         public void LoadCore()
         {
-            var node = ConfigHandler.GetDefaultServer(ref _config);
+            var node = ConfigHandler.GetDefaultServer(_config);
             if (node == null)
             {
                 ShowMsg(false, ResUI.CheckServerSettings);
diff --git a/v2rayN/v2rayN/Handler/LazyConfig.cs b/v2rayN/v2rayN/Handler/LazyConfig.cs
index 36fb0249..b9f259de 100644
--- a/v2rayN/v2rayN/Handler/LazyConfig.cs
+++ b/v2rayN/v2rayN/Handler/LazyConfig.cs
@@ -320,7 +320,6 @@ namespace v2rayN.Handler
                 redirectInfo = true,
             });
 
-
             coreInfos.Add(new CoreInfo
             {
                 coreType = ECoreType.hysteria,
diff --git a/v2rayN/v2rayN/Handler/MainFormHandler.cs b/v2rayN/v2rayN/Handler/MainFormHandler.cs
index e3e9ae8f..24989615 100644
--- a/v2rayN/v2rayN/Handler/MainFormHandler.cs
+++ b/v2rayN/v2rayN/Handler/MainFormHandler.cs
@@ -77,7 +77,7 @@ namespace v2rayN.Handler
                     return null;
                 }
 
-                var item = ConfigHandler.GetDefaultRouting(ref config);
+                var item = ConfigHandler.GetDefaultRouting(config);
                 if (item == null || Utils.IsNullOrEmpty(item.customIcon) || !File.Exists(item.customIcon))
                 {
                     return null;
@@ -183,7 +183,7 @@ namespace v2rayN.Handler
                             Utils.SaveLog("subscription" + msg);
                     });
                     item.updateTime = updateTime;
-                    ConfigHandler.AddSubItem(ref config, item);
+                    ConfigHandler.AddSubItem(config, item);
 
                     await Task.Delay(5000);
                 }
diff --git a/v2rayN/v2rayN/Handler/ProfileExHandler.cs b/v2rayN/v2rayN/Handler/ProfileExHandler.cs
index 421b2c7f..0b755a06 100644
--- a/v2rayN/v2rayN/Handler/ProfileExHandler.cs
+++ b/v2rayN/v2rayN/Handler/ProfileExHandler.cs
@@ -51,7 +51,7 @@ namespace v2rayN.Handler
             }
         }
 
-        private void AddProfileEx(string indexId, ref ProfileExItem profileEx)
+        private void AddProfileEx(string indexId, ref ProfileExItem? profileEx)
         {
             profileEx = new()
             {
diff --git a/v2rayN/v2rayN/Handler/UpdateHandle.cs b/v2rayN/v2rayN/Handler/UpdateHandle.cs
index 2ec8b5cb..2ca1f802 100644
--- a/v2rayN/v2rayN/Handler/UpdateHandle.cs
+++ b/v2rayN/v2rayN/Handler/UpdateHandle.cs
@@ -271,7 +271,7 @@ namespace v2rayN.Handler
                             _updateFunc(false, $"{hashCode}{result}");
                         }
 
-                        int ret = ConfigHandler.AddBatchServers(ref config, result, id, true);
+                        int ret = ConfigHandler.AddBatchServers(config, result, id, true);
                         if (ret <= 0)
                         {
                             Utils.SaveLog("FailedImportSubscription");
diff --git a/v2rayN/v2rayN/Mode/V2rayConfig.cs b/v2rayN/v2rayN/Mode/V2rayConfig.cs
index 14c5dee0..d19040ad 100644
--- a/v2rayN/v2rayN/Mode/V2rayConfig.cs
+++ b/v2rayN/v2rayN/Mode/V2rayConfig.cs
@@ -451,6 +451,11 @@ namespace v2rayN.Mode
         /// grpc
         /// </summary>
         public GrpcSettings4Ray grpcSettings { get; set; }
+
+        /// <summary>
+        /// sockopt
+        /// </summary>
+        public Sockopt4Ray? sockopt { get; set; }
     }
 
     public class TlsSettings4Ray
@@ -632,4 +637,9 @@ namespace v2rayN.Mode
         /// </summary>
         public string pass { get; set; }
     }
+
+    public class Sockopt4Ray
+    {
+        public string? dialerProxy { get; set; }
+    }
 }
\ No newline at end of file
diff --git a/v2rayN/v2rayN/ViewModels/AddServer2ViewModel.cs b/v2rayN/v2rayN/ViewModels/AddServer2ViewModel.cs
index 53934b1f..137db406 100644
--- a/v2rayN/v2rayN/ViewModels/AddServer2ViewModel.cs
+++ b/v2rayN/v2rayN/ViewModels/AddServer2ViewModel.cs
@@ -90,7 +90,7 @@ namespace v2rayN.ViewModels
                 item.preSocksPort = SelectedSource.preSocksPort;
             }
 
-            if (ConfigHandler.EditCustomServer(ref _config, item) == 0)
+            if (ConfigHandler.EditCustomServer(_config, item) == 0)
             {
                 _noticeHandler?.Enqueue(ResUI.OperationSuccess);
                 _view.DialogResult = true;
@@ -122,7 +122,7 @@ namespace v2rayN.ViewModels
             var item = LazyConfig.Instance.GetProfileItem(SelectedSource.indexId);
             item ??= SelectedSource;
             item.address = fileName;
-            if (ConfigHandler.AddCustomServer(ref _config, item, false) == 0)
+            if (ConfigHandler.AddCustomServer(_config, item, false) == 0)
             {
                 _noticeHandler?.Enqueue(ResUI.SuccessfullyImportedCustomServer);
                 if (!Utils.IsNullOrEmpty(item.indexId))
diff --git a/v2rayN/v2rayN/ViewModels/AddServerViewModel.cs b/v2rayN/v2rayN/ViewModels/AddServerViewModel.cs
index 56a05c12..a36b0733 100644
--- a/v2rayN/v2rayN/ViewModels/AddServerViewModel.cs
+++ b/v2rayN/v2rayN/ViewModels/AddServerViewModel.cs
@@ -127,31 +127,31 @@ namespace v2rayN.ViewModels
             switch (item.configType)
             {
                 case EConfigType.VMess:
-                    ret = ConfigHandler.AddServer(ref _config, item);
+                    ret = ConfigHandler.AddServer(_config, item);
                     break;
 
                 case EConfigType.Shadowsocks:
-                    ret = ConfigHandler.AddShadowsocksServer(ref _config, item);
+                    ret = ConfigHandler.AddShadowsocksServer(_config, item);
                     break;
 
                 case EConfigType.Socks:
-                    ret = ConfigHandler.AddSocksServer(ref _config, item);
+                    ret = ConfigHandler.AddSocksServer(_config, item);
                     break;
 
                 case EConfigType.VLESS:
-                    ret = ConfigHandler.AddVlessServer(ref _config, item);
+                    ret = ConfigHandler.AddVlessServer(_config, item);
                     break;
 
                 case EConfigType.Trojan:
-                    ret = ConfigHandler.AddTrojanServer(ref _config, item);
+                    ret = ConfigHandler.AddTrojanServer(_config, item);
                     break;
 
                 case EConfigType.Hysteria2:
-                    ret = ConfigHandler.AddHysteria2Server(ref _config, item);
+                    ret = ConfigHandler.AddHysteria2Server(_config, item);
                     break;
 
                 case EConfigType.Tuic:
-                    ret = ConfigHandler.AddTuicServer(ref _config, item);
+                    ret = ConfigHandler.AddTuicServer(_config, item);
                     break;
             }
 
diff --git a/v2rayN/v2rayN/ViewModels/MainWindowViewModel.cs b/v2rayN/v2rayN/ViewModels/MainWindowViewModel.cs
index bd4ceca8..adc922c8 100644
--- a/v2rayN/v2rayN/ViewModels/MainWindowViewModel.cs
+++ b/v2rayN/v2rayN/ViewModels/MainWindowViewModel.cs
@@ -571,7 +571,7 @@ namespace v2rayN.ViewModels
 
         private void Init()
         {
-            ConfigHandler.InitBuiltinRouting(ref _config);
+            ConfigHandler.InitBuiltinRouting(_config);
             ConfigHandler.InitBuiltinDNS(_config);
             _coreHandler = new CoreHandler(_config, UpdateHandler);
             Locator.CurrentMutable.RegisterLazySingleton(() => _coreHandler, typeof(CoreHandler));
@@ -737,7 +737,7 @@ namespace v2rayN.ViewModels
                 Utils.SaveLog("MyAppExit Begin");
 
                 StorageUI();
-                ConfigHandler.SaveConfig(ref _config);
+                ConfigHandler.SaveConfig(_config);
 
                 //HttpProxyHandle.CloseHttpAgent(config);
                 if (blWindowsShutDown)
@@ -857,7 +857,7 @@ namespace v2rayN.ViewModels
                 RefreshServersMenu();
 
                 //display running server
-                var running = ConfigHandler.GetDefaultServer(ref _config);
+                var running = ConfigHandler.GetDefaultServer(_config);
                 if (running != null)
                 {
                     var runningSummary = running.GetSummary();
@@ -995,7 +995,7 @@ namespace v2rayN.ViewModels
         public void AddServerViaClipboard()
         {
             var clipboardData = Utils.GetClipboardData();
-            int ret = ConfigHandler.AddBatchServers(ref _config, clipboardData!, _subId, false);
+            int ret = ConfigHandler.AddBatchServers(_config, clipboardData!, _subId, false);
             if (ret > 0)
             {
                 InitSubscriptionView();
@@ -1022,7 +1022,7 @@ namespace v2rayN.ViewModels
             }
             else
             {
-                int ret = ConfigHandler.AddBatchServers(ref _config, result, _subId, false);
+                int ret = ConfigHandler.AddBatchServers(_config, result, _subId, false);
                 if (ret > 0)
                 {
                     InitSubscriptionView();
@@ -1069,7 +1069,7 @@ namespace v2rayN.ViewModels
             {
                 return;
             }
-            if (ConfigHandler.CopyServer(ref _config, lstSelecteds) == 0)
+            if (ConfigHandler.CopyServer(_config, lstSelecteds) == 0)
             {
                 RefreshServers();
                 _noticeHandler?.Enqueue(ResUI.OperationSuccess);
@@ -1102,7 +1102,7 @@ namespace v2rayN.ViewModels
                 return;
             }
 
-            if (ConfigHandler.SetDefaultServerIndex(ref _config, indexId) == 0)
+            if (ConfigHandler.SetDefaultServerIndex(_config, indexId) == 0)
             {
                 RefreshServers();
                 Reload();
@@ -1158,7 +1158,7 @@ namespace v2rayN.ViewModels
 
             _dicHeaderSort.TryAdd(colName, true);
             _dicHeaderSort.TryGetValue(colName, out bool asc);
-            if (ConfigHandler.SortServers(ref _config, _subId, colName, asc) != 0)
+            if (ConfigHandler.SortServers(_config, _subId, colName, asc) != 0)
             {
                 return;
             }
@@ -1168,7 +1168,7 @@ namespace v2rayN.ViewModels
 
         public void TestServerAvailability()
         {
-            var item = ConfigHandler.GetDefaultServer(ref _config);
+            var item = ConfigHandler.GetDefaultServer(_config);
             if (item == null || item.configType == EConfigType.Custom)
             {
                 return;
@@ -1222,7 +1222,7 @@ namespace v2rayN.ViewModels
             {
                 return;
             }
-            if (ConfigHandler.MoveServer(ref _config, ref _lstProfile, index, eMove) == 0)
+            if (ConfigHandler.MoveServer(_config, ref _lstProfile, index, eMove) == 0)
             {
                 RefreshServers();
             }
@@ -1233,7 +1233,7 @@ namespace v2rayN.ViewModels
             var targetIndex = _profileItems.IndexOf(targetItem);
             if (startIndex >= 0 && targetIndex >= 0 && startIndex != targetIndex)
             {
-                if (ConfigHandler.MoveServer(ref _config, ref _lstProfile, startIndex, EMove.Position, targetIndex) == 0)
+                if (ConfigHandler.MoveServer(_config, ref _lstProfile, startIndex, EMove.Position, targetIndex) == 0)
                 {
                     RefreshServers();
                 }
@@ -1363,7 +1363,7 @@ namespace v2rayN.ViewModels
             var ret = (new RoutingSettingWindow()).ShowDialog();
             if (ret == true)
             {
-                ConfigHandler.InitBuiltinRouting(ref _config);
+                ConfigHandler.InitBuiltinRouting(_config);
                 RefreshRoutingsMenu();
                 //RefreshServers();
                 Reload();
@@ -1414,7 +1414,7 @@ namespace v2rayN.ViewModels
                 return;
             }
 
-            var ret = ConfigHandler.ImportOldGuiConfig(ref _config, fileName);
+            var ret = ConfigHandler.ImportOldGuiConfig(_config, fileName);
             if (ret == 0)
             {
                 RefreshRoutingsMenu();
@@ -1500,7 +1500,7 @@ namespace v2rayN.ViewModels
             {
                 _coreHandler.LoadCore();
 
-                //ConfigHandler.SaveConfig(ref _config, false);
+                //ConfigHandler.SaveConfig(_config, false);
 
                 ChangeSystemProxyStatus(_config.sysProxyType, false);
             });
@@ -1515,7 +1515,7 @@ namespace v2rayN.ViewModels
 
         private void CloseV2ray()
         {
-            ConfigHandler.SaveConfig(ref _config, false);
+            ConfigHandler.SaveConfig(_config, false);
 
             ChangeSystemProxyStatus(ESysProxyType.ForcedClear, false);
 
@@ -1536,7 +1536,7 @@ namespace v2rayN.ViewModels
             ChangeSystemProxyStatus(type, true);
 
             SystemProxySelected = (int)_config.sysProxyType;
-            ConfigHandler.SaveConfig(ref _config, false);
+            ConfigHandler.SaveConfig(_config, false);
         }
 
         private void ChangeSystemProxyStatus(ESysProxyType type, bool blChange)
@@ -1604,7 +1604,7 @@ namespace v2rayN.ViewModels
                 return;
             }
 
-            if (ConfigHandler.SetDefaultRouting(ref _config, item) == 0)
+            if (ConfigHandler.SetDefaultRouting(_config, item) == 0)
             {
                 _noticeHandler?.SendMessage(ResUI.TipChangeRouting, true);
                 Reload();
@@ -1710,7 +1710,7 @@ namespace v2rayN.ViewModels
                           {
                               _config.uiItem.colorModeDark = ColorModeDark;
                               ModifyTheme(ColorModeDark);
-                              ConfigHandler.SaveConfig(ref _config);
+                              ConfigHandler.SaveConfig(_config);
                           }
                       });
 
@@ -1721,7 +1721,7 @@ namespace v2rayN.ViewModels
                         if (_config.uiItem.followSystemTheme != FollowSystemTheme)
                         {
                             _config.uiItem.followSystemTheme = FollowSystemTheme;
-                            ConfigHandler.SaveConfig(ref _config);
+                            ConfigHandler.SaveConfig(_config);
                             if (FollowSystemTheme)
                             {
                                 ModifyTheme(!Utils.IsLightTheme());
@@ -1745,7 +1745,7 @@ namespace v2rayN.ViewModels
                      {
                          _config.uiItem.colorPrimaryName = SelectedSwatch?.Name;
                          ChangePrimaryColor(SelectedSwatch.ExemplarHue.Color);
-                         ConfigHandler.SaveConfig(ref _config);
+                         ConfigHandler.SaveConfig(_config);
                      }
                  });
 
@@ -1763,7 +1763,7 @@ namespace v2rayN.ViewModels
                           Application.Current.Resources["StdFontSize2"] = size + 2;
                           Application.Current.Resources["StdFontSizeMsg"] = size - 1;
 
-                          ConfigHandler.SaveConfig(ref _config);
+                          ConfigHandler.SaveConfig(_config);
                       }
                   });
 
@@ -1776,7 +1776,7 @@ namespace v2rayN.ViewModels
                     {
                         _config.uiItem.currentLanguage = CurrentLanguage;
                         Thread.CurrentThread.CurrentUICulture = new(CurrentLanguage);
-                        ConfigHandler.SaveConfig(ref _config);
+                        ConfigHandler.SaveConfig(_config);
                     }
                 });
         }
diff --git a/v2rayN/v2rayN/ViewModels/OptionSettingViewModel.cs b/v2rayN/v2rayN/ViewModels/OptionSettingViewModel.cs
index d645c280..afb33fdb 100644
--- a/v2rayN/v2rayN/ViewModels/OptionSettingViewModel.cs
+++ b/v2rayN/v2rayN/ViewModels/OptionSettingViewModel.cs
@@ -323,7 +323,7 @@ namespace v2rayN.ViewModels
             //coreType
             SaveCoreType();
 
-            if (ConfigHandler.SaveConfig(ref _config) == 0)
+            if (ConfigHandler.SaveConfig(_config) == 0)
             {
                 _noticeHandler?.Enqueue(ResUI.OperationSuccess);
                 _view.DialogResult = true;
diff --git a/v2rayN/v2rayN/ViewModels/RoutingRuleSettingViewModel.cs b/v2rayN/v2rayN/ViewModels/RoutingRuleSettingViewModel.cs
index 8c7c4273..c545ef9c 100644
--- a/v2rayN/v2rayN/ViewModels/RoutingRuleSettingViewModel.cs
+++ b/v2rayN/v2rayN/ViewModels/RoutingRuleSettingViewModel.cs
@@ -250,7 +250,7 @@ namespace v2rayN.ViewModels
             item.ruleNum = _rules.Count;
             item.ruleSet = Utils.ToJson(_rules, false);
 
-            if (ConfigHandler.SaveRoutingItem(ref _config, item) == 0)
+            if (ConfigHandler.SaveRoutingItem(_config, item) == 0)
             {
                 _noticeHandler?.Enqueue(ResUI.OperationSuccess);
                 _view.DialogResult = true;
diff --git a/v2rayN/v2rayN/ViewModels/RoutingSettingViewModel.cs b/v2rayN/v2rayN/ViewModels/RoutingSettingViewModel.cs
index b6ec6fa5..7b38712d 100644
--- a/v2rayN/v2rayN/ViewModels/RoutingSettingViewModel.cs
+++ b/v2rayN/v2rayN/ViewModels/RoutingSettingViewModel.cs
@@ -81,7 +81,7 @@ namespace v2rayN.ViewModels
             _view = view;
             SelectedSource = new();
 
-            ConfigHandler.InitBuiltinRouting(ref _config);
+            ConfigHandler.InitBuiltinRouting(_config);
 
             enableRoutingAdvanced = _config.routingBasicItem.enableRoutingAdvanced;
             domainStrategy = _config.routingBasicItem.domainStrategy;
@@ -134,7 +134,7 @@ namespace v2rayN.ViewModels
 
         private void BindingLockedData()
         {
-            _lockedItem = ConfigHandler.GetLockedRoutingItem(ref _config);
+            _lockedItem = ConfigHandler.GetLockedRoutingItem(_config);
             if (_lockedItem != null)
             {
                 _lockedRules = Utils.FromJson<List<RulesItem>>(_lockedItem.ruleSet);
@@ -164,7 +164,7 @@ namespace v2rayN.ViewModels
 
                 _lockedItem.ruleSet = Utils.ToJson(_lockedRules, false);
 
-                ConfigHandler.SaveRoutingItem(ref _config, _lockedItem);
+                ConfigHandler.SaveRoutingItem(_config, _lockedItem);
             }
         }
 
@@ -208,7 +208,7 @@ namespace v2rayN.ViewModels
 
             EndBindingLockedData();
 
-            if (ConfigHandler.SaveConfig(ref _config) == 0)
+            if (ConfigHandler.SaveConfig(_config) == 0)
             {
                 _noticeHandler?.Enqueue(ResUI.OperationSuccess);
                 _view.DialogResult = true;
@@ -289,7 +289,7 @@ namespace v2rayN.ViewModels
                 return;
             }
 
-            if (ConfigHandler.SetDefaultRouting(ref _config, item) == 0)
+            if (ConfigHandler.SetDefaultRouting(_config, item) == 0)
             {
                 RefreshRoutingItems();
                 IsModified = true;
@@ -298,7 +298,7 @@ namespace v2rayN.ViewModels
 
         private void RoutingAdvancedImportRules()
         {
-            if (ConfigHandler.InitBuiltinRouting(ref _config, true) == 0)
+            if (ConfigHandler.InitBuiltinRouting(_config, true) == 0)
             {
                 RefreshRoutingItems();
                 IsModified = true;
diff --git a/v2rayN/v2rayN/ViewModels/SubEditViewModel.cs b/v2rayN/v2rayN/ViewModels/SubEditViewModel.cs
index 3c4e1e54..dcc30d50 100644
--- a/v2rayN/v2rayN/ViewModels/SubEditViewModel.cs
+++ b/v2rayN/v2rayN/ViewModels/SubEditViewModel.cs
@@ -71,7 +71,7 @@ namespace v2rayN.ViewModels
                 item.convertTarget = SelectedSource.convertTarget;
             }
 
-            if (ConfigHandler.AddSubItem(ref _config, item) == 0)
+            if (ConfigHandler.AddSubItem(_config, item) == 0)
             {
                 _noticeHandler?.Enqueue(ResUI.OperationSuccess);
                 _view.DialogResult = true;
diff --git a/v2rayN/v2rayN/ViewModels/SubSettingViewModel.cs b/v2rayN/v2rayN/ViewModels/SubSettingViewModel.cs
index e2da43a7..cb9e6aea 100644
--- a/v2rayN/v2rayN/ViewModels/SubSettingViewModel.cs
+++ b/v2rayN/v2rayN/ViewModels/SubSettingViewModel.cs
@@ -104,7 +104,7 @@ namespace v2rayN.ViewModels
 
             foreach (var it in SelectedSources)
             {
-                ConfigHandler.DeleteSubItem(ref _config, it?.id);
+                ConfigHandler.DeleteSubItem(_config, it?.id);
             }
             RefreshSubItems();
             _noticeHandler?.Enqueue(ResUI.OperationSuccess);
diff --git a/v2rayN/v2rayN/Views/GlobalHotkeySettingWindow.xaml.cs b/v2rayN/v2rayN/Views/GlobalHotkeySettingWindow.xaml.cs
index 5b357f69..a79879ef 100644
--- a/v2rayN/v2rayN/Views/GlobalHotkeySettingWindow.xaml.cs
+++ b/v2rayN/v2rayN/Views/GlobalHotkeySettingWindow.xaml.cs
@@ -112,7 +112,7 @@ namespace v2rayN.Views
         {
             _config.globalHotkeys = _TextBoxKeyEventItem.Values.ToList();
 
-            if (ConfigHandler.SaveConfig(ref _config, false) == 0)
+            if (ConfigHandler.SaveConfig(_config, false) == 0)
             {
                 HotkeyHandler.Instance.ReLoad();
                 this.DialogResult = true;